<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        var obj = {
            name: '龙哥',
            age: 21,
            sex: '男',
            hobby: function() {
                console.log(obj.name + '喜欢健身锻炼!');
            }
        }
        for (var k in obj) {
            console.log(k); //k变量输出得到的是属性名
            console.log(obj[k]); // obj[k]输出的得到的是属性值
        }
        obj.hobby();
    </script>
</body>

</html>